It’s a right. John is looking at the sky.
這是一個(gè)晚上。約翰抬頭看著天空。

Tom is John’s younger brother. He asks John “What are you doing?”
湯姆是約翰的弟弟。他問約翰：“你在干什么？”

John says, “I’m counting stars.”
約翰說：“我在數(shù)星星。”

Tom laughs and says, “It’s really dark now. Why not count them tomorrow morning?”
湯姆笑著說：“現(xiàn)在天空太黑了。你為什么不等到明天早上再數(shù)呢？